Fastener



Nov. 4, 1924. 1,513,963

F. s. CARR FASTENER Fil ed March 8 '192) InveW/Zo'r: wed S. t'farr,

Patented Nov. 4, 1924.

UNI 5T TES PAENT OFFICE.

FRED S. CAB/R, OF NEWTON, MASSACHUSETTS, A SSIGNGR TO CARR FASTENER COM- PANY, OF CAMBRIDGE, MASSACHUSETTS, A. CORPORATION OF MAINE.

FASTENER.

Application filed March 8, 1921.

To all whom it may concern:

Be it known that I, FRED S. CARR, a citizen of theUnited States, and a resident of Newton, in the county of Middlesex and Commonwealth of Massachusetts, have invented an Improvement in Fasteners, of which th following description, in connection with the accompanying drawings, is a specification, like characters on the drawings rep-resenting like parts.

' This invention pertains to improvements in separable fasteners. It among the objects of the invention to provide a separable fastener of simple construction and superior holding power.

Referring to the drawings, which show a preferred embodiment of one illustrative form of my invention Figure 1 is a front elevation of two pieces of fabric connected by the preferred form of fastener;

Fig. 2 is a section on the line 22 of Fig. l;

Fig. 3 is a section on the line 33 of Fig. 2;

Fig. 4: is an elevation ofthe preferred form of socket member prior. to attachment thereof to its carrying fabric;

Fig. 5 is a diagrammatic view showing the preferred form of socket member and its attaching part in their relation relative to each other and to the socket-carrying fabric prior to assembly; and

6 is an elevation of the socket member illustrated in Fig. 43 taken from the opposite side thereof.

Referring to the drawings and to the preferred form of my invention selected for illustrative purposes, I have shown in Fig. 2 a stud including a head 7, a neck 8 and a base portion 9 secured to the stud-carrying fabric 10 by a stud-securing rivet 11. The preferred form of socket illustrated is peculiarly well adapted for being metallically fastened to the socket-carrying fabric 12. VVhere'this form 'of attt'achment is utilized, 1 may provide a plate 13, having a stud-receiving aperture therethrough and containing a spring 14:,Iwith a'flanged side wall 15 flanged-inwardly at 16 to engage and retain a socket-securing part which preferably includes," as illustrated, the plate portion 17 adapted to overlie portions of the spring 14, more may hereinafter described, and ineluding a tub-ular'projection'18 from "which Serial No. 450.745.

prongs 19 project adapted to penetrate the stud-carrying fabric 12 and to be clenched within securing means on the opposite side of the socket-carrying fabric from the sockct proper. The securing means may be of any suitable form, but preferably includes an anvil portion 20 for turning the pron s 19, and a clenching portion 21 adapted to Es pressed against the socket, carrying fabric 12 by the prongs 19 when turned. Where the clenching portion and anvil portion are separate, as illustrated, they may be held together by a cap '22 providing a finished appearance for the outside of the fastening. Between the anvil portion and the clenching portion is preferably provided a space into which th socket-carrying fabric 12 may be crowded by thefiange 18 underlying the prongs 19, as shown in Fig. 2. The prongs 19 are preferably pointed, as illustrated, and are preferably spaced apart at a considerable distance (Fig. 5) so that they may to an inconsiderable degree only cut the socket-carrying fabric, leaving wide portions thereof uncut orunpenetrated and adapted to be engaged by the outer face of the flange 18, thereby providing a very secure fastening of the socket to its carrying fabric.

The casing 13 is provided with a studreceiving aperture, as; before stated, and this stud-receiving aperture is preferably notched at 30 (Fig. 6) at that side thereof which comes in the line of strain between stud and socket, this usually being at that side thereof adjacent the margin of the socket-carrying fabric. The notch 30 is preferably of such proportions as to provide a locking against separation of the stud from the socket by the resolution of forces arising from lateral strain between stud and socket while permitting, even under a considerable degree of lateral strain, separation of stud and socket pursuant to a strain in a direction more nearly axial than that arising from the resolution of forces under lateral strain. The stud-receivin aperture 311s preferably intersected by a plurality of resilient jaws, preferably integral with the spring 14 and preferably so formed as to press the neck of the stud toward the notch 30. To provide a maximum resiliency for these jaws, the spring'll is preferably of the W-shape illustrated, the central portion 32 may extend to or n'earfth periphery of the interiorof the socket and I rotation of the spring 14: relative to its casing may be prevented in any suitable way, as by an indentation 33 from the casing extending between the opposite sides: of the spring. The offsets 3a and 35, where the spring intersects the stud-receiving aperture, are effective to press the stud toward the notch 30, and the return bends 36 and 57,

free to move laterally between the opposite sides of the casing, increase the'resiliency ofthe spring. This resiliency may be further increased by additional return bends 38 and 39, spaced from the interior wall of the casing, while the ends 40 and A1 of the spring may rest against this interior wall.

To reinforce the plate 13 adjacent the stud-receiving aperture therein, and also to promote easy separation. of stud and socket when under lateral strain, the plate 13 may be and preferably is, as indicated, turned back adjacentthe periphery of the studreceivingaperture to provide a bead 50, thus doublingthe effective thickness of the plate adjacent the stud receiving aperture. This also preferably provides a rounded edge surrounding the stud-receiving aperture so that separation. of stud and socket is facilitated-by reduction of the friction which might otherwise exist between a relatively short and rough edge on the plate and the neck of the stud. The bead 50, in the preferred form of my invention, is formed prior to the punching of the notch 30, so that the .bead will not extend around the notched portion of the socket plate. In the preferred form of my invention, the notch 30 is of somewhat less width, where it joins the main stud-receiving aperture, than the diameter of the neck of the stud, thus preventing complete entrance of the neck of the stud into the notch and insuring a hearing between the points at each side of the notch and the neck of the stud. The preferred construction illustrated greatly increases the strength of these points for any given gauge of metal used in forming the socket plate and makes the plate of greater effective thickness adjacent the stud-receiving aperture at one side thereof than at the other side thereof.

The provision of the bead may be of use in other types of socket, and I have claimed it broadly in a copending application filed herewith, Serial No. 450,748.

\Vhile I have shown and described a preferred form of one embodiment of my invention, it will be understood that changes involving omission, substitution, alteration and reversal of parts, and even changes in the mode of operation, may be made without departing from the scope of my invention, which is best defined in the following claims.

Claims.

1. A socket for separable fasteners in eluding a casing having a plate with a stud-receiving aperture therethrough, said plate having a return flange at its edge adj went the aperture, and said plate notched to provide an extension of said aperture.

2. A socket for separable fasteners including a casing having a plate with a studreceiving aperture therethro-ugh, said plate having a return flange at its edge adjacent the aperture, and said plate notched to provide an extension of said aperture, the marginal portion of said plate adjacent said notch comprising a single thickness only of the plate.

3. A socket for separable fasteners comf prising a casing having a stud-receiving aperture therein and a notch communicating with said aperture, said casing reinforced by a bead around the margin of said aperture, said bead projecting inwardly of said casing to provide a relatively smooth rounded edge about said aperture on the sides thereof away from thenotch. I I

4. A socket for separable fasteners comprising, in combination, a casing having a:

tubular flange projecting from-its rear side, spaced apart prongs projecting from the end of said flange, securing means on the opposite side of the socket-carrying fabric,

said securing means presenting an anvilt portion for turning said prongs, a-clenching portion to be pressed toward the fabric by said prongs when turned, and a space between said anvil portion and said clenching portion, said space opposite said tubular flange to permit the carrying fabric to be pressed thereinto by said flange.

5. A socket for separable fasteners in cluding a casing having a flange projecting from one side thereof, and fabric-piercing prongs projecting from the flange in the same. direction, sald prongs spaced apart from each other; in combinatlon with an I anvil member having a space to receive and means to turn and clench all of said prongs,

so that the edge of the flange between the' prongs is brought by the clenching operation against the fabric which the prongs pierce and said edge presses the fabric intothe space provided by the anvil member.

6. A socket for separable fasteners comprising, in combination, a casing part providing a plate having a stud-receiving aperture therein, a second casingpart secured to said first casing part, a spring between said casing parts, said second casing part having a plurality of spaced apart fabric-piercing prongs projecting therefrom, and securing means for application to the opposite side of the socket-carrying fabric from said casing parts, said securing means including prong-turning anvil means and prong-em I gaging clenching means engaged by said prongs when turned and pressed by said prongs toward the carryingv fabric and said i casing parts on the opposite side of said fabric.

7. A socket for separable fasteners comprising, in combination, a casing part providing a plate having a stud-receiving aperture therein, a second casing part secured to said first casing part, a spring between said casing parts, said second casing part having a plurality of spaced apart fabricpiercing prongs projecting therefrom said prongs rising from a projecting flange sur rounding a central aperture in said second casing part, and securing means for application to the opposite side of the socketcarr xing fabric from said casing parts, said securing means including prong-turning anvil means and separate prong-engaging clenching i'neans engaged by said prongs when turned and pressed by said prongs toward the carrying fabric and said casing parts on the opposite side of said fabric.

In testimony whereof I have signed my name to this specification.

FRED S. CARR. 

